U.S. patent number 7,029,788 [Application Number 10/226,226] was granted by the patent office on 2006-04-18 for 9v rechargeable battery.
This patent grant is currently assigned to Shenzhen Likexing Battery Co., Ltd.. Invention is credited to Xuefeng Gao, Jiangfeng Wu, Jianbo Yu, Ping Zhang.
United States Patent |
7,029,788 |
Yu , et al. |
April 18, 2006 |
9V rechargeable battery
Abstract
A 9V rechargeable battery comprising a plurality of column cells
connected in series and enclosed by a container and a cover with a
negative terminal and a positive terminal. Said container (1)
further comprises a pair of lateral sidewalls formed with openings
and another pair of lateral sidewalls formed with recesses so as to
receive said cells snugly.
Inventors: |
Yu; Jianbo (Guangdong-Province,
CN), Zhang; Ping (Guangdong-Province, CN),
Wu; Jiangfeng (Guangdong-Province, CN), Gao;
Xuefeng (Guangdong-Province, CN) |
Assignee: |
Shenzhen Likexing Battery Co.,
Ltd. (Shenzhen, CN)
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Family
ID: |
4703772 |
Appl.
No.: |
10/226,226 |
Filed: |
August 23, 2002 |
Prior Publication Data
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Document
Identifier |
Publication Date |
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US 20030054238 A1 |
Mar 20, 2003 |
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Foreign Application Priority Data
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Aug 24, 2001 [CN] |
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01234377 U |
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Current U.S.
Class: |
429/159; 429/99;
429/176 |
Current CPC
Class: |
H01M
50/213 (20210101); Y02E 60/10 (20130101); H01M
10/30 (20130101); H01M 6/42 (20130101); Y02P
70/50 (20151101); H01M 10/345 (20130101) |
Current International
Class: |
H01M
2/02 (20060101); H01M 2/10 (20060101) |
Field of
Search: |
;429/99,100,156,159,176 |
References Cited
[Referenced By]
U.S. Patent Documents
Primary Examiner: Crepeau; Jonathan
Attorney, Agent or Firm: McDermott Will & Emery LLP
Claims
What is claimed is:
1. A 9V rechargeable battery comprising a plurality of column cells
connected in series and enclosed by a container (1) and a cover
with a negative terminal and a positive terminal, wherein said
container (1) comprises a pair of lateral sidewalls formed with
openings and another pair of lateral sidewalls formed with recesses
so as to receive said cells snugly.
2. A battery according to claim 1, wherein said container (1) is
formed from plastic materials.
3. A battery according to claim 1, wherein the container (1) is
formed from metal.
4. A battery according to claim 1, wherein it comprises 6 or 7
nickel cadmium (Ni--Cd) cells.
5. A battery according to claim 1, wherein it comprises 6 or 7
nickel metal hydride (Ni--MH) cells.
6. A battery according to claim 1, wherein it is interchangeable
with a conventional laminated battery (6F22).
Description
FIELD OF THE INVENTION
The present invention relates to a 9V rechargeable battery, and
more particularly, to a 9V rechargeable battery interchangeable
with a conventional laminated 6F22-type battery.
DESCRIPTION OF THE PRIOR ART
A conventional 9V laminated (6F22) battery is a typical dry
battery. Recently, in consideration of resource recycling and
economic reasons, 9V rechargeable batteries that are
interchangeable in shape with 9V laminated (6F22) batteries have
been substantially developed. A conventional 9V rechargeable
battery typically consists of 6 or 7 button nickel cadmium (Ni--Cd)
cells or nickel metal hydride (Ni--MH) cells sealed in a plastic or
metallic container. A single button cell has a relatively low
capacity, and the container takes up considerable room. Therefore,
a conventional 9V rechargeable battery has a relatively low
capacity (100 160 mAh), and also disadvantageously takes about 15
hours to fully charge the battery.
SUMMARY OF THE INVENTION
It is an object of the present invention to provide a
fast-rechargeable 9V battery having higher capacity.
Therefore, the present invention provides a 9V rechargeable battery
comprising: a plurality of column cells connected in series and
enclosed by a container and a top cover with a positive terminal
and a negative terminal.
Compared with the prior art, a battery according to the present
invention comprises a plurality of cells with a larger diameter,
and the capacity thereof is therefore increased without any
substantial change in shape or size.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a schematic view of the structure according to the
present invention.
FIG. 2 is a schematic view of a battery comprising 7 column cells
connected in series according to another embodiment of the present
invention.
FIG. 3 is a schematic view showing a conventional 9V rechargeable
battery.
FIG. 4 is a schematic view showing a battery comprising sidewalls
formed with openings according to a preferred embodiment of the
present invention.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
This invention will be described in detail with reference to the
accompanying drawings.
The entire disclosure of Chinese Patent Application No. 01234377.3,
filed Aug. 24, 2001, is hereby incorporated by reference.
As shown in FIG. 1, FIG. 2, and FIG. 4, a rechargeable battery 5
according to the invention comprises a plurality (e.g.--6 or 7)
fast-chargeable column nickel cadmium (Ni--Cd) or nickel metal
hydride (Ni--MH) cells enclosed by a container 1 similar in shape
and size to a conventional 9V laminated battery and a plastic cover
2 with a positive terminal 4 and a negative terminal 3. Such a
battery can be charged fully within just 1.5 hours.
Typical 9V rechargeable batteries each consist of 7 nickel cadmium
(Ni--Cd) or nickel metal hydride (Ni--MH) cells and have a nominal
output voltage of 8.4V, and they are most popular. As shown in FIG.
2, a rechargeable battery typically comprises 7 column cells
connected in series, and thus has a ratio of the length thereof (in
the X-direction) to the width (in the Y-direction) that appears
greater than that of a conventional 9V laminated battery.
Therefore, in order to accommodate the present cells in such a
conventional 9V rechargeable battery's container as shown in FIG.
3, there are only two solutions: (1) to use column cells with a
reduced diameter; or (2) to use a container with an increased
length in X-direction. However, the former will result in a
decreased capacity battery due to the small size of the cells,
whereas the latter will make a bigger battery, which is not
interchangeable with a conventional 9V laminated battery.
Therefore, as shown in FIG. 4, a container according to the present
invention comprises a pair of lateral sidewalls formed with
openings 6 and another pair of lateral sidewalls formed with
recesses 7. The present column cells are received snugly in the
container providing a high-capacity battery enclosed in a
conventionally dimensioned container so as to be interchangeable
with conventional 9V rechargeable batteries.
Embodiment 1:
As shown in FIG. 2, a battery comprises 7 column nickel metal
hydride (Ni--MH) cells with a 6.8 mm diameter, a 41.5 mm height and
a 200 mAh nominal capacity, and thus it usually outputs a 200 mAh
capacity and a 8.4V nominal voltage. The battery is received in an
acrylonitrile-butadiene-styrene (ABS) plastic container 1 as shown
in FIG. 4. Meanwhile, a positive terminal 4 and a negative terminal
3 are extended through an ABS plastic cover that is firmly soldered
to the container 1 by means of ultrasonic welding. The finished
battery has an overall dimension of 15.7 mm
(X-direction).times.26.2 mm (Y-direction).times.48.5 mm
(Z-direction), and is interchangeable with a 6F22-type battery made
according to the national standard of China. A battery according to
the first embodiment outputs a nominal capacity of 200 mAh and a
nominal voltage of 8.4V, and it can be fully charged at a maximum
current of 200 mA in just 1.5 hours. Alternatively, the container
may be made from other plastic materials or metallic materials; the
cover 2 and the container 1 may be welded or bonded together
according to the scope of the present invention.
Embodiment 2:
FIG. 3 shows a conventional plastic container for a 9V rechargeable
battery according to the prior art, which has a 0.8 mm thick wall,
and which is identical in size to that of Embodiment 1. Such a
container can only receive 7 column cells having a diameter of 6.5
mm. The highest nominal capacity so far available by a single
column nickel metal hydride (Ni--MH) cell about 6.5 mm diameter and
41.5 mm height is 160 mAh. As shown in FIG. 2, a battery comprises
7 column cells and usually outputs a capacity of 160 mAh and an
8.4V nominal voltage. The battery is received in an ABS plastic
container 1 with the 0.8-mm thick wall as shown in FIG. 3.
Meanwhile, a positive terminal 4 and a negative terminal 3 are
extended through an ABS plastic cover that is firmly soldered to
the container 1 by means of ultrasonic welding. The finished
battery has an overall dimension of 15.7 mm
(X-direction).times.26.2 mm (Y-direction).times.48.5 mm
(Z-direction), and is interchangeable with a 6F22-type battery made
according to the national standard of China. A battery according to
the second embodiment outputs a nominal capacity of 160 mAh and a
nominal voltage of 8.4V, and it can be fully charged at a maximum
current of 160 mA in just 1.5 hours.
Embodiment 3:
According to FIG. 2, a battery comprises 7 column cells and usually
outputs a 130 mAh capacity and an 8.4V nominal voltage. The battery
is received in an ABS plastic container 1 as shown in FIG. 4.
Meanwhile, a positive terminal 4 and a negative terminal 3 are
extended through an ABS plastic cover that is firmly soldered to
the container 1 by means of ultrasonic welding. The finished
battery has an overall dimension of 15.7 mm
(X-direction).times.26.2 mm (Y-direction).times.48.5 mm
(Z-direction), and is interchangeable with a 6F22-type battery made
according to the national standard of China. A battery according to
the third embodiment outputs a nominal capacity of 130 mAh and a
nominal voltage of 8.4V, and it can be fully charged at a maximum
current of 130 mA in just 1.5 hours.
Comparative Sample 1:
A battery comprises 7 V110-type button Ni--MH cells and usually
outputs a 150 mAh capacity and an 8.4V nominal voltage. The battery
is received in an ABS plastic container 1 as shown in FIG. 4.
Meanwhile, a positive terminal 4 and a negative terminal 3 are
extended through an ABS plastic cover that is firmly soldered to
the container 1 by means of ultrasonic welding. The finished
battery has an overall dimension of 15.7 mm
(X-direction).times.26.2 mm (Y-direction).times.48.5 mm
(Z-direction), and is interchangeable with a 6F22-type battery made
according to the national standard of China. A present battery
outputs a nominal capacity of 150 mAh and a nominal voltage of
8.4V, and it can be fully charged at a maximum current of 15 mA in
15 hours.
Comparative Sample 2:
A battery comprises 7 V110-type button Cd--Ni cells and usually
outputs a 110 mAh capacity and an 8.4V nominal voltage. The battery
is received in an ABS plastic container 1 as shown in FIG. 4.
Meanwhile, a positive terminal 4 and a negative terminal 3 are
extended through an ABS plastic cover that is firmly soldered to
the container 1 by means of ultrasonic welding. The finished
battery has an overall dimension of 15.7 mm
(X-direction).times.26.2 mm (Y-direction).times.48.5 mm
(Z-direction), and is interchangeable with a 6F22-type battery made
according to the national standard of China. A present battery
outputs a nominal capacity of 110 mAh and a nominal voltage of
8.4V, and it can be fully charged at a maximum current of 11 mA in
15 hours.
* * * * *